1

LT1004

Micropower Voltage

Reference

s

Guaranteed

±4mV Initial Accuracy LT1004-1.2

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Guaranteed

±20mV Accuracy LT1004-2.5

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Guaranteed 10

µA Operating Current

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Guaranteed Temperature Performance

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Operates up to 20mA

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Very Low Dynamic Impedance

The LT

2-terminal bandgap reference diode designed to provide

high accuracy and excellent temperature characteristics at

very low operating currents. Optimization of the key

parameters in the design, processing and testing of the

device results in accuracy specifications previously attain-

able only with selected units. Below is a distribution plot of

reference voltage for a typical lot of LT1004-1.2. Virtually

all of the units fall well within the prescribed limits of

±4mV.

The LT1004 is a pin-for-pin replacement for the

LM185/LM385 series of references with improved accu-

racy specifications. More important, the LT1004 is an

attractive device for use in systems where accuracy was

previously obtained at the expense of power consump-

tion and trimming.

For a low drift micropower reference with guaranteed

temperature coefficient, see the LT1034 data sheet.

FEATURES

200

180

160

140

120

100

80

60

40

20

1004 TA02

1200 PARTS

, LTC and LT are registered trademarks of Linear Technology Corporation.

Typical Distribution of

Reference Voltage (LT1004-1.2)

Micropower Cold Junction Compensation for Thermocouples

R1

100k

186

Ω

3V

LITHIUM

1.8k

1004 TA01

*

5k AT

25

°C

†

LT1004-1.2

1684

Ω

THERMOCOUPLE

TYPE

J

233k

K

299k

T

300k

S

2.1M

* QUIESCENT CURRENT

≅ 15µA

† YELLOW SPRINGS INST. CO.

PART #44007

COMPENSATES WITHIN

±1°C FROM 0°C TO 60°C

+

–

+

–

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Portable Meter References

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Portable Test Instruments

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Battery-Operated Systems

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Current Loop Instrumentation